THZ: new reading  p78DualModePoint

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5633 2b470e98-0d58-463d-a4d8-8e2adae1ed80
Change Detail and Set Button.

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5634 2b470e98-0d58-463d-a4d8-8e2adae1ed80